FileSys/Kernel: Implement SetSize service call for File objects.

6 files changed, 49 insertions, 0 deletions

diff --git a/src/core/file_sys/file.h b/src/core/file_sys/file.h
index 3749e4fc..443e6531 100644
--- a/src/core/file_sys/file.h
+++ b/src/core/file_sys/file.h
@@ -44,6 +44,13 @@ public:
     virtual size_t GetSize() const = 0;
 
     /**
+     * Set the size of the file in bytes
+     * @param size New size of the file
+     * @return true if successful
+     */
+    virtual bool SetSize(const u64 size) const = 0;
+
+    /**
      * Close the file
      * @return true if the file closed correctly
      */
diff --git a/src/core/file_sys/file_romfs.cpp b/src/core/file_sys/file_romfs.cpp
index 0709e98f..3ef616e0 100644
--- a/src/core/file_sys/file_romfs.cpp
+++ b/src/core/file_sys/file_romfs.cpp
@@ -49,6 +49,15 @@ size_t File_RomFS::GetSize() const {
 }
 
 /**
+ * Set the size of the file in bytes
+ * @param size New size of the file
+ * @return true if successful
+ */
+bool File_RomFS::SetSize(const u64 size) const {
+    return false;
+}
+
+/**
  * Close the file
  * @return true if the file closed correctly
  */
diff --git a/src/core/file_sys/file_romfs.h b/src/core/file_sys/file_romfs.h
index 28b4f115..06973eb9 100644
--- a/src/core/file_sys/file_romfs.h
+++ b/src/core/file_sys/file_romfs.h
@@ -45,6 +45,13 @@ public:
     size_t GetSize() const override;
 
     /**
+     * Set the size of the file in bytes
+     * @param size New size of the file
+     * @return true if successful
+     */
+    bool SetSize(const u64 size) const override;
+
+    /**
      * Close the file
      * @return true if the file closed correctly
      */
diff --git a/src/core/file_sys/file_sdmc.cpp b/src/core/file_sys/file_sdmc.cpp
index 76e7f5d3..3ef2b0c0 100644
--- a/src/core/file_sys/file_sdmc.cpp
+++ b/src/core/file_sys/file_sdmc.cpp
@@ -76,6 +76,17 @@ size_t File_SDMC::GetSize() const {
 }
 
 /**
+ * Set the size of the file in bytes
+ * @param size New size of the file
+ * @return true if successful
+ */
+bool File_SDMC::SetSize(const u64 size) const {
+    file->Resize(size);
+    file->Flush();
+    return true;
+}
+
+/**
  * Close the file
  * @return true if the file closed correctly
  */
diff --git a/src/core/file_sys/file_sdmc.h b/src/core/file_sys/file_sdmc.h
index d2302049..6b3a1f3a 100644
--- a/src/core/file_sys/file_sdmc.h
+++ b/src/core/file_sys/file_sdmc.h
@@ -48,6 +48,13 @@ public:
     size_t GetSize() const override;
 
     /**
+     * Set the size of the file in bytes
+     * @param size New size of the file
+     * @return true if successful
+     */
+    bool SetSize(const u64 size) const override;
+
+    /**
      * Close the file
      * @return true if the file closed correctly
      */
diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp
index fa497299..0a66ab29 100644
--- a/src/core/hle/kernel/archive.cpp
+++ b/src/core/hle/kernel/archive.cpp
@@ -181,6 +181,14 @@ public:
             break;
         }
 
+        case FileCommand::SetSize:
+        {
+            u64 size = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
+            DEBUG_LOG(KERNEL, "SetSize %s %s size=%d", GetTypeName().c_str(), GetName().c_str(), size);
+            backend->SetSize(size);
+            break;
+        }
+
         case FileCommand::Close:
         {
             DEBUG_LOG(KERNEL, "Close %s %s", GetTypeName().c_str(), GetName().c_str());